Compare Keychron C2 vs K4 Pro Differences Side by Side

This comparison is for buyers deciding between a traditional full-size keyboard and a more compact, feature-packed alternative. Both are tray-mounted plastic boards from Keychron, but they serve different priorities. The C2 offers a classic 104-key layout with a dedicated numpad, while the K4 Pro shrinks that into a 96% form factor and adds Bluetooth, QMK/VIA programmability, and a steel plate. The decision comes down to whether you need a simple, reliable wired board or a wireless powerhouse you can tweak endlessly.

Model
	72	92	Select a keyboard to compare
Rating	4.8 stars (214 reviews)	4.7 stars (7 reviews)
Purchase Options
Main differences	Released in 2020 Available in a 100% layout Built with the ANSI layout standard Supports Wired, Wired only connectivity Features ABS keycaps Offers Yes, Rgb, North-face, Rgb North-face RGB lighting	Released in 2022 Available in a 96% layout Built with the ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK layout standard Supports QMK firmware Supports VIA configuration Features N-key rollover Includes screw-in stabilizers Has built-in sound dampening Supports Bluetooth, Wired, Wireless connectivity Equipped with a 4000 mAh battery Weighs about 1280 g Sized at 31 x 391 x 139 mm Features PBT, ABS keycaps Offers Yes, Rgb, White, South-face, Rgb South-face, White South-face RGB lighting
Score	Scores Performance: 65 Build Quality: 62.6 Productivity: 77 Customizability: 76.3 Portability: 47.7	Scores Performance: 81.5 Build Quality: 83.9 Productivity: 94.7 Customizability: 97.3 Portability: 53.6
Name	Name Keychron C2	Name Keychron K4 Pro
Release year	Release year 2020	Release year 2022
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Linear, Tactile, Clicky
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 100%	Layout Size 96%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Wired, Wired only	Connection Bluetooth, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity -	Battery capacity 4000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Tray Mount	Mount Style Tray Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, North-face	Backlight Rgb, White, South-face, White South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Plastic, ABS	Case Material Plastic, ABS
Keycaps Material	Keycaps Material ABS	Keycaps Material PBT, ABS
Dimensions	Dimensions -	Dimensions 31 x 391 x 139 mm
Weight	Weight -	Weight 1280g

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Pros and Trade-offs

The Keychron K4 Pro is the more capable and versatile keyboard, offering wireless freedom, deep programmability, and a more refined typing feel out of the box. The Keychron C2 is a solid, budget-friendly option for those who want a straightforward full-size wired keyboard and do not need customization or wireless features. Choose the C2 if you want a simple, reliable board for a fixed desk setup, and choose the K4 Pro if you value flexibility, quiet operation, and the ability to tailor the keyboard to your exact needs.

Keychron C2

+Features a traditional 104-key full-size layout with a dedicated number pad.
+Available at a lower starting price point than the K4 Pro.
+Offers a wide range of backlight options including non-backlit, white, and RGB versions.
+Includes 12 multimedia keys for convenient control.

−Wired-only connectivity limits placement and portability.
−Does not support QMK or VIA firmware for key remapping or macros.
−Uses a tray mount design and ABS keycaps, which are less premium than the K4 Pro's options.
−Some user reviews note the USB-C port is recessed and may not fit all cables.

Keychron K4 Pro

+Supports both Bluetooth 5.1 wireless and USB-C wired connectivity, connecting up to 3 devices.
+Fully programmable with open-source QMK firmware and the Keychron Launcher web app.
+Features sound-absorbing foam, a silicone bottom pad, and a steel plate for a quieter, more responsive typing experience.
+Comes with pre-lubed K Pro switches and screw-in PCB stabilizers for smooth keypresses.
+Available as a barebones kit for custom builders.

−The 96% layout may feel cramped for users accustomed to a full-size keyboard with separated navigation keys.
−Some early users reported a defective PCB issue with the number pad zero key, though newer revisions should have this resolved.
−The default OSA-profile PBT keycaps do not allow RGB light to shine through the legends.
−Has fewer customer reviews (7) compared to the C2 (214), making long-term reliability harder to assess.

Which Keyboard Is Better for Your Needs?

The K4 Pro wins or ties in all use cases, largely due to its wireless connectivity, QMK/VIA programmability, and enhanced internal components like a steel plate and sound dampening. The C2 ties only in gaming, where both offer the same wired polling rate and switch options. For users who need a simple, full-size keyboard for a single desk setup and want to save money, the C2 is still a viable option. However, the K4 Pro's additional features make it a more versatile choice for most scenarios.

GamingTie

•Both keyboards offer a 1000 Hz polling rate and hot-swappable switch options.
•Both are tray-mounted with plastic cases, so neither has a clear structural advantage.
•The K4 Pro's Bluetooth mode is not ideal for competitive gaming, but wired mode performs identically to the C2.

OfficeKeychron K4 Pro

•The K4 Pro supports Bluetooth 5.1 for connecting up to 3 devices wirelessly.
•The K4 Pro includes sound-dampening foam and a silicone bottom pad for quieter typing.
•The K4 Pro comes with pre-lubed switches and screw-in PCB stabilizers for a smoother feel.

ProgrammingKeychron K4 Pro

•The K4 Pro supports QMK firmware and the Keychron Launcher web app for full key remapping and macros.
•The K4 Pro's 96% layout provides a numpad without taking up as much horizontal desk space.

TravelKeychron K4 Pro

•The K4 Pro is a compact 96% layout, making it smaller and lighter than the full-size C2.
•The K4 Pro includes Bluetooth wireless connectivity, removing the need to carry a cable for every use.

ModdingKeychron K4 Pro

•The K4 Pro uses a steel plate and screw-in PCB stabilizers, providing a more solid modding base than the C2.
•The K4 Pro has QMK/VIA support for firmware-level customization of layouts and macros.
•The K4 Pro is available as a barebones kit, allowing you to supply your own switches and keycaps.
•The K4 Pro provides south-facing RGB LEDs, which are compatible with Cherry-profile keycaps.

Content CreationKeychron K4 Pro

•The K4 Pro supports Bluetooth 5.1 for easy switching between a desktop and tablet or laptop.
•The K4 Pro has QMK/VIA support for creating custom shortcuts for video editing or design software.
•The K4 Pro includes sound dampening for a quieter recording environment.